3 years ago

Pleaseeee give answer ASAP. Major test

Physics

1 answer:

sergiy2304 [10]3 years ago

3 0

Answer:

B, A, C

Explanation:

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lesya692 [45]

Answer:

4086 J

Explanation:

The potential energy is transformed to kinetic energy less the frictional energy. Potential energy= mgh where m represent mass, g is acceleration due to gravity and h is the height of cliff

Since we have force of air resistance, work done due to air resistance will be product of force and distance

$mgh-Fh= 0.5mv^{2}= KE$

Substituting 10 Kg for m, 9.81 for g and 60 m for F then the kinetic energy at the bottom will be

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Answer:

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Refraction occurs when a wave changes______ as it passes through a different medium.

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The answer to your question is Speed

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